What is this, I can't even…
Let me tell you what was MY ex-teacher mother's Killer Strategy for making me study hard when I was a kid:
She gave me her Killer Look. Also known as "If you don't study hard, I will kill you" Look.
In other news, this assessment book saw it fit to teach students that it is okay to use "revert" as "reply".
Please do the needful and expunge this erroneous use of "revert" from our lives. I beg of you.